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Spherical indentation of nickel thin film on steel - 4340 substrate
Published in
2011
Volume: 3
   
Pages: 745 - 750
Abstract
In this paper, finite element simulations of spherical indentation of Nickel thin film on Steel-4340 are studied for single and multiple cycle of indentation as well. The objective was to understand the mechanics of coated systems, from load-displacement (P-h) curves, stress distribution in the film and the effect of substrate yield strength on the indentation response. The loading portion of P-h curve showed displacement bursts and the reason for this is investigated. A transition in the deformation behavior of the film from Hertz-type to flexure was observed for a normalized indentation depth of h/tf≈0.2. The influence of coating-substrate properties on P-h curve is also investigated for different h/tf ratios and yield strains. Attempts are also made to explore the possibility of understanding the creep-fatigue behavior of coated specimen subjected to cyclic indentation at room temperature from Indentation depth v/s time, Indentation depth v/s number of cycles and Plastic dissipation energy v/s number of cycles curve. Copyright © 2011 by ASME.
About the journal
JournalASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Open AccessNo
Concepts (23)
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    COATED SYSTEMS
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    COATING-SUBSTRATE
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    CREEP-FATIGUE
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    CYCLIC INDENTATION
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    Deformation behavior
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    DISPLACEMENT BURST
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    Finite element simulations
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    INDENTATION DEPTH
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    Load displacements
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    NICKEL THIN FILM
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    Number of cycles
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    PLASTIC DISSIPATION
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    Room temperature
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    SPHERICAL INDENTATIONS
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    YIELD STRAIN
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    Creep
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    Exhibitions
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    Mechanical engineering
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    Nickel
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    Spheres
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    Stress concentration
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    Thin films
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